1 files changed, 44 insertions, 0 deletions
diff --git a/teensy/dyn_arr.c b/teensy/dyn_arr.c
new file mode 100644
index 0000000..38e3b31
--- /dev/null
+++ b/teensy/dyn_arr.c
@@ -0,0 +1,44 @@
+#include "dyn_arr.h"
+
+#include <stdio.h>
+#include <assert.h>
+
+void *_ty_list_create(size_t type_size, int init_cap)
+{
+    init_cap = init_cap < TY_LIST_MIN_CAP
+        ? TY_LIST_MIN_CAP
+        : init_cap;
+
+    int *arr = (int*)ty_alloc(type_size * init_cap + sizeof(int) * 2);
+
+    arr[0] = 0;
+    arr[1] = init_cap;
+    return (void*)(arr + 2);
+}
+
+void *_ty_list_append_slot(size_t type_size, void **arr)
+{
+    int *cap = ty_list_cap_ptr(*arr);
+    int *len = ty_list_len_ptr(*arr);
+
+    (*len)++;
+
+    if (*len > *cap) {
+        *cap *= TY_LIST_GROW_RATE;
+
+        void* base = ty_list_base(*arr);
+        base = ty_realloc(base, (type_size * *cap) + sizeof(int) * 2);
+        assert(base != NULL); // Just to handle the case
+        *arr = (void*)((int*)base + 2);
+
+        len = ty_list_len_ptr(*arr);
+    }
+
+    return (char*)*arr + ((*len - 1) * type_size);
+}
+
+void ty_list_free(void *arr)
+{
+    void *base = ty_list_base(arr);
+    ty_free(base);
+}